<template>
<div class="tab-control">
  <!-- 1.动态绑定active的class   :class="{active: index === currentIndex}"-->
  <!-- :class="{active:真值}"  时，显示样式-->
  <!-- :class="{active:假值}"  时，不显示样式-->
  <div v-for="(item,index) in titles" class="tab-control-item"
  :class="{active: currentIndex === index}" @click="itemclick(index)">
    <span>{{item}}</span>
  </div>
</div>
</template>

<script>
export default {
  name: "TabControl",
  props: {
    titles: {
      type: Array,
      default(){
        return[]
      }
    }
  },
  data(){
    return{
      currentIndex:0
    }
  },
  methods: {
    itemclick(index){
      this.currentIndex = index
      this.$emit('tabclick',index)
}
  }
}
</script>

<style scoped>
.tab-control{
  display: flex;
  text-align: center;
  height: 40px;
  line-height: 40px;
  font-size: 14px;
  background-color: #fff;
}
.tab-control-item{
  flex: 1;
}
.tab-control-item span{
  padding: 5px;
}
.active{
  color: var(--color-high-text);
}
.active span{
  border-bottom: 3px solid var(--color-high-text);
}
</style>
